| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You under the Apache License, Version 2.0 |
| # (the "License"); you may not use this file except in compliance with |
| # the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| """Unit tests for the SDFRestrictionProvider module.""" |
| |
| from __future__ import absolute_import |
| |
| import unittest |
| |
| from apache_beam.io.concat_source import ConcatSource |
| from apache_beam.io.concat_source_test import RangeSource |
| from apache_beam.io import iobase |
| from apache_beam.io.iobase import SourceBundle |
| |
| |
| class SDFBoundedSourceRestrictionProviderTest(unittest.TestCase): |
| def setUp(self): |
| self.initial_range_start = 0 |
| self.initial_range_stop = 4 |
| self.initial_range_source = RangeSource(self.initial_range_start, |
| self.initial_range_stop) |
| self.sdf_restriction_provider = ( |
| iobase._SDFBoundedSourceWrapper._SDFBoundedSourceRestrictionProvider( |
| self.initial_range_source, |
| desired_chunk_size=2)) |
| |
| def test_initial_restriction(self): |
| unused_element = None |
| restriction = ( |
| self.sdf_restriction_provider.initial_restriction(unused_element)) |
| self.assertTrue(isinstance(restriction, SourceBundle)) |
| self.assertEqual(self.initial_range_start, restriction.start_position) |
| self.assertEqual(self.initial_range_stop, restriction.stop_position) |
| self.assertTrue(isinstance(restriction.source, RangeSource)) |
| |
| def test_create_tracker(self): |
| expected_start = 1 |
| expected_stop = 3 |
| restriction = SourceBundle(expected_stop - expected_start, |
| RangeSource(1, 3), |
| expected_start, |
| expected_stop) |
| restriction_tracker = ( |
| self.sdf_restriction_provider.create_tracker(restriction)) |
| self.assertTrue(isinstance(restriction_tracker, |
| iobase. |
| _SDFBoundedSourceWrapper. |
| _SDFBoundedSourceRestrictionTracker)) |
| self.assertEqual(expected_start, restriction_tracker.start_pos()) |
| self.assertEqual(expected_stop, restriction_tracker.stop_pos()) |
| |
| def test_simple_source_split(self): |
| unused_element = None |
| restriction = ( |
| self.sdf_restriction_provider.initial_restriction(unused_element)) |
| expect_splits = [(0, 2), (2, 4)] |
| split_bundles = list(self.sdf_restriction_provider.split(unused_element, |
| restriction)) |
| self.assertTrue( |
| all([isinstance(bundle, SourceBundle) for bundle in split_bundles])) |
| |
| splits = ([(bundle.start_position, |
| bundle.stop_position) for bundle in split_bundles]) |
| self.assertEqual(expect_splits, list(splits)) |
| |
| def test_concat_source_split(self): |
| unused_element = None |
| initial_concat_source = ConcatSource([self.initial_range_source]) |
| sdf_concat_restriction_provider = ( |
| iobase._SDFBoundedSourceWrapper._SDFBoundedSourceRestrictionProvider( |
| initial_concat_source, |
| desired_chunk_size=2)) |
| restriction = ( |
| self.sdf_restriction_provider.initial_restriction(unused_element)) |
| expect_splits = [(0, 2), (2, 4)] |
| split_bundles = list(sdf_concat_restriction_provider.split(unused_element, |
| restriction)) |
| self.assertTrue( |
| all([isinstance(bundle, SourceBundle) for bundle in split_bundles])) |
| splits = ([(bundle.start_position, |
| bundle.stop_position) for bundle in split_bundles]) |
| self.assertEqual(expect_splits, list(splits)) |
| |
| def test_restriction_size(self): |
| unused_element = None |
| restriction = ( |
| self.sdf_restriction_provider.initial_restriction(unused_element)) |
| split_1, split_2 = self.sdf_restriction_provider.split(unused_element, |
| restriction) |
| split_1_size = self.sdf_restriction_provider.restriction_size( |
| unused_element, split_1) |
| split_2_size = self.sdf_restriction_provider.restriction_size( |
| unused_element, split_2) |
| self.assertEqual(2, split_1_size) |
| self.assertEqual(2, split_2_size) |
| |
| |
| class SDFBoundedSourceRestrictionTrackerTest(unittest.TestCase): |
| |
| def setUp(self): |
| self.initial_start_pos = 0 |
| self.initial_stop_pos = 4 |
| source_bundle = SourceBundle( |
| self.initial_stop_pos - self.initial_start_pos, |
| RangeSource(self.initial_start_pos, self.initial_stop_pos), |
| self.initial_start_pos, |
| self.initial_stop_pos) |
| self.sdf_restriction_tracker = ( |
| iobase._SDFBoundedSourceWrapper._SDFBoundedSourceRestrictionTracker( |
| source_bundle)) |
| |
| def test_current_restriction_before_split(self): |
| _, _, actual_start, actual_stop = ( |
| self.sdf_restriction_tracker.current_restriction()) |
| self.assertEqual(self.initial_start_pos, actual_start) |
| self.assertEqual(self.initial_stop_pos, actual_stop) |
| |
| def test_current_restriction_after_split(self): |
| fraction_of_remainder = 0.5 |
| self.sdf_restriction_tracker.try_claim(1) |
| expected_restriction, _ = ( |
| self.sdf_restriction_tracker.try_split(fraction_of_remainder)) |
| self.assertEqual(expected_restriction, |
| self.sdf_restriction_tracker.current_restriction()) |
| |
| def test_try_split_at_remainder(self): |
| fraction_of_remainder = 0.4 |
| expected_primary = (0, 2, 2.0) |
| expected_residual = (2, 4, 2.0) |
| self.sdf_restriction_tracker.try_claim(0) |
| actual_primary, actual_residual = ( |
| self.sdf_restriction_tracker.try_split(fraction_of_remainder)) |
| self.assertEqual(expected_primary, (actual_primary.start_position, |
| actual_primary.stop_position, |
| actual_primary.weight)) |
| self.assertEqual(expected_residual, (actual_residual.start_position, |
| actual_residual.stop_position, |
| actual_residual.weight)) |
| self.assertEqual(actual_primary.weight, |
| self.sdf_restriction_tracker._weight) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
